. The Canadian field-naturalist. 1985 Campbell, Van Der Raay, Robertson, and Petrar: Arctic Loon 339 1. Haines Triangle 2. Atlin Lake 3. Liard River 4. Fort Nelson 5. Stikine River 6. Kitsault 7. Central Interior 8. Peace River 9. Cariboo 10. Mt. Robson 11. SW Interior 12. Okanagan. Figure 1. Geographical location of summer records of Arctic Loons in interior British Columbia, 1924-1983. Darkened areas depict breeding range. arriving as early as 13 May and remaining through August. It is uncommon except in the vicinity of Atlin Lake, Liard River and Kitsault where breeding popu- lations are es
. The Canadian field-naturalist. 1985 Campbell, Van Der Raay, Robertson, and Petrar: Arctic Loon 339 1. Haines Triangle 2. Atlin Lake 3. Liard River 4. Fort Nelson 5. Stikine River 6. Kitsault 7. Central Interior 8. Peace River 9. Cariboo 10. Mt. Robson 11. SW Interior 12. Okanagan. Figure 1. Geographical location of summer records of Arctic Loons in interior British Columbia, 1924-1983. Darkened areas depict breeding range. arriving as early as 13 May and remaining through August. It is uncommon except in the vicinity of Atlin Lake, Liard River and Kitsault where breeding popu- lations are established (Figure 1). For example, \. Robertson (personal communication) surveyed 123 different wetlands along a proposed gas pipelines cor- ridor from Lower Post to Fort St. John (715 km) and found Arctic Loons on 31 (25%) of them. Of those six percent supported breeding pairs. Arctic Loons may have nested in British Columbia earlier, in the late 1800's and early 1900's. MacFarlane and Charles (1908) reported nesting at Stuart Lake (Central Interior in Figure 1) on 29 May 1889, and Anderson (1915) found a pair breeding near Atlin on 15 June 1914. However, Brooks and Swarth (1925) and later Munro and Cowan (1947) considered the evidence inconclusive, the former claiming that those locations were too far south for this arctic species to breed. More recently Stanwell-Fletcher and Stanwell- Fletcher (1943) considered the Arctic Loon as a "probable breeder" on Tetana Lake in the central interior of the province. In the summer of 1978 Provincial Museum staff confirmed breeding when they located two pairs of Arctic Loons, each with a small young, on small lakes south of the British Columbia/Yukon border. The following year a nest with an egg was found near Atlin (Figure 2). There are 16 known breeding locations in the province through 1983. Arctic Loons have a disjunct breeding distribution in British Columbia (Figure 1). At least three pairs have nested on small lakes alon
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